Popular Tango app, website was breached by Syrian Electronic Army, Database was hacked.
 
The website of Tango app (Tango.me) was hacked and the database was breached. SEA have confirmed that the database contained more than 1.5 TB daily backup of the server. In addition to that the database contained millions of the app users phone numbers and contact and their emails.
The Announcement was made By SEA from their Official Twitter Account:

Sorry @TangoMe, We needed your database too, thank you for it! https://t.co/mSN76b9Jz8 #SEA #SyrianElectronicArmy
— SyrianElectronicArmy (@Official_SEA12) July 19, 2013

Tango was also using the Outdated version of WordPress, same as that of True caller which was hacked just a few days ago by SEA.

Now the big question which arises is that, Is your personal data on these social network and social apps safe anymore. These social networks don’t even have time to update their WordPress account. How you can expect Of your Personal data to be safe.

Also read: True Caller hacked, database breached by Syrian Electronic Army